Surgical bandage.



No. 887,886. PATENTED MAY 19, 1908. M. A. WILLOT.

SURGICAL BANDAGE.

APPLICATION FILED DEO.17, 1906.

UNITED PATENT OFFICE.

MAROELLIN ANTOINE WILLOT, OF ROUBAIX, FRANCE.

SURGICAL BANDAGE. 1

Specification of Letters Patent.

Patented May 19, 1908.

Application filed December 1 7 ,1306. Serial No. 348,184.

The accompanying drawing shows diagrammatically a portion of the fabric of which the bandage is composed. A designat ing three two-strand cra e threads with right hand twist on right-hen twist; B three twostrand crape threads with left-hand twist on left-hand twist, C the weft threads and D the border formed by the last two warp threads twisted upon another.

There are various kinds of surgical bandages of pure cotton or a mixture of wool and cotton which are extensible and retractable without the use of rubber or other elastic substance in their manufacture It will be obvious that elasticity in bandages of this kind is. most essential to insure the suppleness and adaptation of the bandages for all possible cases, and at the same time to procure the most hygienic and beneficial results. These qualities however have been but imperfectly obtained by all the forms of hitherto known bandages, however great their general use may have been since their texture and composition are not the most suitable for the pur ose desired.

The object o the present invention is a surgical bandage of ure wool or cotton having greater extensi ility and retractabilityand the least heat retaining qualities if of pure cotton and the most heat retaining qualities if of pure wool. This result is obtained by a new combination of known elements differing from all those hitherto in use and of which the following are the fundamental features, firstly; the improved bandage has its warp (in the direction of .its length) formedexclusively of thick crape threads of ure wool or pure cotton, and secondly this Eandage of pure wool or pure cotton has its war formed of such thick crape threads regular y disposed in groups or strips formed alternately of three threads twisted with torsion left on left and three threads twisted with torsion right on right. By

thick crape threads is here understood threads each consisting of two strands or slivers twistedtorsion on torsion, that is to say two slivers twisted upon one another with the same direction of twist as originally given said slivers viz. right on right and left on left, with a number of twists double or even treble that of the torsion normally given, which renders them apt to retract freely if left to themselves or when woven into a fabric by suitable arrangement and assemblage in said fabric.

The weft of the fabric is formed of ordi nary cotton or woolen threads. It should be remarked that in the surgical bandages hitherto made the threads used in the warp are twisted in a contrary direction to the torsion of the individual threads or strands, which fact constitutes an important point of difference.

The invention may bebriefly stated as follows, firstly exclusive formation of the warp of pure wool or pure cotton crape or crepon threads consisting of'two strands or slivers twisted with right-hand torsion on right-hand torsion, and with left-hand torsion on left-hand torsion, which has not hitherto been done and secondly the arrangement of the warp is of three such twisted pure cotton or pure wool crape threads with right hand torsion on right-hand torsion, alternating with three such twisted pure wool orpure cotton crape threads with left-hand torsion on left-hand torsion. This combinationis entirely novel and constitutes a new article of manufacture having the characteristics of great elasticity and great contractibility. The improved bandage is not closed or selvaged by the weft. The slipping of the border or selvage threads is prevented by entwining the last two warp threads, twisting one on the other to contract on the weft. The bandage can be made of any width used in practice, for instance from 0.03 meters to 0.30 or 0.35 meters.

- What I claim as my invention and desire to secure by Letters Patent of the United States is':

1. An extensible surgical bandage of fabric having the warp composed of two kinds of threads, one kind formed by' twisting to the right a plurality of slivers previously se arately twisted to the right, and the ot er kind formed by twisting to the left a plu- 1 other threads each thread formed by twisting 10 rality of slivers previously separately twisted to the left a plurality of fibers previously to the left. separately twisted t0 the left.-

2. Anextensible surgical bandage of fabric In witness whereof I; have signed this 5 having the warp composed of groups of specificationinthe presence of two witnesses.

threads, each thread formed by twistlng to MAROELLIN ANTOINE WILLO'I. the right a plurality of slivers previously Witnesses: separatel twisted to the r1ght,.sa,id groups GEORGE LE Oo of three s being alternated with groups of A. D. MATOU. 

